Leather-skiving machine



(No Model.) I i A. .D. WORTHEN. LEATHER SKIVING MACHINE.

No. 423,977. Patented Mar. 25, 1890.

IllllIllllllllllllllllllllllll ATTORNEY N. PEIIIH. Phcb-Lihngnphm.Wallingtull. D. C

UNITED STATES PATENT OFFICE.

ADRIAN D. VVORTHEN, OF SANDONN, NE\V HAMPSHIRE.

LEATH ER-SKIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 423,977, dated March25, 1890.

7 Application filed December 28, 1859. Serial No. 335,248. (No model.)

T0 at whom it may concern.-

Be it known that I, ADRIAN l). Wo'nrHEN, a citizen of the United States,residing at Sandown, in the county of Rockingham and State of NewHampshire, have invented certain new and useful Improvements in Machinesfor Skiving, Splitting, and Ch amfering Leather; and I do hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the annexed drawings, making a part of thisspecification, and to the letters of reference marked thereon.

This invention relates to certain new and useful improvements inmachines for skivin g leather.

The invention consists in the peculiar construction, arrangement, andadaptation of parts, all as more fully hereinafter described, shown inthe drawings, and then particularly pointed out in the appended claim.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which- Figure 1 is a side elevation of my improvedmachine. Fig. 2 is a vertical crosssection on the line 0c 09 of Fig. 1.Fig. 3 is a cross-section on the line z z of Fig. 2. Fig. at is a detailin end elevation.

Like letters of reference indicate like parts throughout the severalviews.

Referring now to the details of the drawin gs by letter, A designates abase or support, from which rise the uprights B, in which is journaledthe lower shaft 0, on one end of which is a suitable crank and handle D,by means of which motion is imparted thereto.

Thisshaft, within the space inclosed by the two uprights, carries agear-wheel a, and upon the outer end beyond the other upright acorrugated or fluted roller E, the inner edge of which is curved or thediameter of which increases, as shown at b, to correspond with the curveof the knife hereinafter described.

- The roller end of this shaft passes through a block 0, which issupported upon the vertical coiled spring d, held between teats on theblock and the base or support, as shown in Figs. 1 and 2, the said blockbeing free to move vertically in an aperture therefor in the upright.

The upper half F of the frame is hinged at one end, as at e, to the endupright in the following manner: The upper end of the upright is formedwith a tenon or projection f, and the lower end of the adjacent end ofthe upper half of the frame with a recess g to receive the same, atransverse bolt or rod h passing through the parts, as shown best inFig. 4:, to serve as a hinge. In this upper half of the frame isjournaled a shaft G, parallel with the shaft 0, and provided with agear-wheel i, meshing with the gear-wheel a on the lower shaft, and atthe other end of the upper shaft is a smooth-faced roller H, the tworollers E and H being of the same diameter, except where the lower oneis enlarged, as before described, to correspond with the curve of theknife.

The end of the upper half of the frame opposite its hinge is held to thelower portion by means of the vertical screw or screws I, which passdown into the lower portion, and are provided with a thumb-nut j, bywhich the parts may be adjusted in relation to each other to make alarger or smaller opening between the rollers to accommodate thicker orthinner leather.

K is the knife-support. It is held to and adjustable on the upright inthe following manner: The-upper end of the upright has ahorizontally-projecting rib l, and the knifesupport, which issubstantially L-shaped in cross-section, as shown best in Fig. 3, has atthe junction of its vertical and horizontal portions a groove m toreceive said rib. The vertical portion of this knife-support has a slotn at right angles to the length of the knife, as seen best in Figs. 2and 8, and through this slot passes a set-screw 0 into the upright. Thesaid set-screw and slot provide for adjustment of the knife-support tobring the cutting or acting edge of the knife farther or less under therollers.

L is the knife, the inner or acting edge of which is curved upward atthe edge of the knife, as shown at p in Fig. 3, and this knife ingparallel with the cutting or acting edge of the knife, as shown, and inthis slot are placed one or more set-screws r to hold the knife in itsadjusted position, the said slot and screws providing for adjustment ofthe knife lengthwise of the rollers.

Especial importance is attached to the manner of adjustment of theknife, as by this arrangement the knife cannot be moved by the leatherpassing thereover, as has been found to be the case heretofore.

What I claim as new is In a skiving-machine, the combination, with theuprighthaving a right-angled rib atits up-

